Sebastian Fragoso-Fuentes, R. Rico-Martínez, M. Arzate-Cárdenas
Ibuprofen (IBP) has demonstrated its toxicological potential toward aquatic biota: affecting microalgae and their nutritional value and altering the population growth of algae-feeding zooplankters. This study assessed the effect of a) IBP sublethal concentrations, and b) three different algal densities ( Nannochloropsis oculata at 0.25, 0.50, and 1.00 × 10 6 cells/mL) on Alona guttata and Lecane papuana. We determined LC50 values for both species (63.476 mg/L and 12.053 mg/L, respectively)
{"title":"Effect of the Non-Steroidal Anti-Inflammatory\u0000Drug Ibuprofen on the Chydorid\u0000Alona guttata (Chydoridae: Aloninae)\u0000and the Rotifer Lecane papuana (Monogononta:\u0000Lecanidae) Fed on Different Algal Densities","authors":"Sebastian Fragoso-Fuentes, R. Rico-Martínez, M. Arzate-Cárdenas","doi":"10.15244/pjoes/177184","DOIUrl":"https://doi.org/10.15244/pjoes/177184","url":null,"abstract":"Ibuprofen (IBP) has demonstrated its toxicological potential toward aquatic biota: affecting microalgae and their nutritional value and altering the population growth of algae-feeding zooplankters. This study assessed the effect of a) IBP sublethal concentrations, and b) three different algal densities ( Nannochloropsis oculata at 0.25, 0.50, and 1.00 × 10 6 cells/mL) on Alona guttata and Lecane papuana. We determined LC50 values for both species (63.476 mg/L and 12.053 mg/L, respectively)","PeriodicalId":510399,"journal":{"name":"Polish Journal of Environmental Studies","volume":"21 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140693096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The Mediterranean region in Turkey is considered highly suitable for commercial queen bee rearing due to its temperate climate characteristics. Therefore, in the research, the queens to be examined in terms of quality criteria were obtained from commercial queen bee enterprises in Antalya, Mersin, Adana, and Hatay provinces in the Mediterranean region. In April-May, 5 queen bees from each of the 36 enterprises rearing queens were included in the study. Characteristics such as queen weight, spermatheca volume and diameter, and spermatozoa stored in the spermatheca are considered quality criteria, and the factors affecting them were evaluated on a total of 180 queens. Queens taken from the enterprises were divided into three groups according to their weight; light (172.56±1.75 mg), moderate (193.70±0.62 mg), and heavy (214.13±0.95 mg). The average spermatheca diameters in the light, medium, and heavy groups were 0.982±0.006 mm, 1.053±0.002 mm, and 1.215±0.008 mm, respectively. According to the average results obtained regarding the quality criteria in the study, it was determined that 60.55% of the queens evaluated in the study (the heavy group) were at standard quality levels. On the other hand, in the light and medium groups, it was observed that all values were below the quality standard values. These results show that while evaluating the quality criteria in queen bee breeding enterprises, selection can be made according to the weight of the queen bees.
{"title":"Determination of the Effect of Live Weight\u0000on Various Quality Parameters of Commercially\u0000Reared Queens (Apis mellifera L.) in Turkey","authors":"Servet Arslan, Habibe Sema Arslan","doi":"10.15244/pjoes/184636","DOIUrl":"https://doi.org/10.15244/pjoes/184636","url":null,"abstract":"The Mediterranean region in Turkey is considered highly suitable for commercial queen bee rearing due to its temperate climate characteristics. Therefore, in the research, the queens to be examined in terms of quality criteria were obtained from commercial queen bee enterprises in Antalya, Mersin, Adana, and Hatay provinces in the Mediterranean region. In April-May, 5 queen bees from each of the 36 enterprises rearing queens were included in the study. Characteristics such as queen weight, spermatheca volume and diameter, and spermatozoa stored in the spermatheca are considered quality criteria, and the factors affecting them were evaluated on a total of 180 queens. Queens taken from the enterprises were divided into three groups according to their weight; light (172.56±1.75 mg), moderate (193.70±0.62 mg), and heavy (214.13±0.95 mg). The average spermatheca diameters in the light, medium, and heavy groups were 0.982±0.006 mm, 1.053±0.002 mm, and 1.215±0.008 mm, respectively. According to the average results obtained regarding the quality criteria in the study, it was determined that 60.55% of the queens evaluated in the study (the heavy group) were at standard quality levels. On the other hand, in the light and medium groups, it was observed that all values were below the quality standard values. These results show that while evaluating the quality criteria in queen bee breeding enterprises, selection can be made according to the weight of the queen bees.","PeriodicalId":510399,"journal":{"name":"Polish Journal of Environmental Studies","volume":"143 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140693439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Min Zeng, Yao-Yao Wei, Kang-xin Yu, Hai-nan Huang, Tian Xie
Oil tankers carry large quantities of liquefied chemical cargoes that are flammable, explosive and/or toxic. Hence, a collision with a tanker that causes an oil spill poses a severe threat to the marine environment and human life. In order to quantify and analyze the risk factors of ship collision oil spill, this paper adopts a combination of knowledge element (KE) and dynamic Bayesian networks (DBN) to conduct an emergency scenario study based on the “scenario-response” model. Firstly, the key elements of “accident scenario state, human factors, emergency measures, and emergency goals” are selected to represent the accident. Then, the mechanism of accident evolution is analyzed according to the case, and DBN is used to build a scenario model of oil spills from tanker collisions. Finally, to verify the importance of human factors and the scientificity of emergency measures, the oil spill accident due to the collision between the two vessels known as MT “SANCHI” and MV “CF CRYSTAL” is used as an example for analysis. The accident model deduction results are in line with reality, and the research results help relevant decision makers to understand the deduction process of oil spills from tanker collisions, which is of great significance to enhance the safety of oil tanker shipping and marine environmental protection.
{"title":"Scenario Deduction of Oil Spill from Tankers\u0000in a Ship-Ship Collision Based on the Knowledge\u0000Element and Dynamic Bayesian Network","authors":"Min Zeng, Yao-Yao Wei, Kang-xin Yu, Hai-nan Huang, Tian Xie","doi":"10.15244/pjoes/177436","DOIUrl":"https://doi.org/10.15244/pjoes/177436","url":null,"abstract":"Oil tankers carry large quantities of liquefied chemical cargoes that are flammable, explosive and/or toxic. Hence, a collision with a tanker that causes an oil spill poses a severe threat to the marine environment and human life. In order to quantify and analyze the risk factors of ship collision oil spill, this paper adopts a combination of knowledge element (KE) and dynamic Bayesian networks (DBN) to conduct an emergency scenario study based on the “scenario-response” model. Firstly, the key elements of “accident scenario state, human factors, emergency measures, and emergency goals” are selected to represent the accident. Then, the mechanism of accident evolution is analyzed according to the case, and DBN is used to build a scenario model of oil spills from tanker collisions. Finally, to verify the importance of human factors and the scientificity of emergency measures, the oil spill accident due to the collision between the two vessels known as MT “SANCHI” and MV “CF CRYSTAL” is used as an example for analysis. The accident model deduction results are in line with reality, and the research results help relevant decision makers to understand the deduction process of oil spills from tanker collisions, which is of great significance to enhance the safety of oil tanker shipping and marine environmental protection.","PeriodicalId":510399,"journal":{"name":"Polish Journal of Environmental Studies","volume":" 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140690965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xuanrong Li, Jie Ma, Song Chen, Xiaoke Shen, Jie Meng, Jiasheng Geng, Yang Yang, Zhibin Yang, Jun Zhang, Haitao Zhang, Shisheng Li
The related issues with the heavy metals in the different water bodies have been widespread, causing concern around the world. In this study, the single-factor pollution index, Nemerow composite pollution index, health risk assessment (AHP model), multivariate statistical analysis, including correlation analysis, and principal component analysis were conducted to depict the pollution appraisal, the health risk assessment, and the source apportionment of the reservoirs in Northern Anhui Province, China. The results showed that the mean concentration order was as follows: Mn>Zn>As>Ni>Cr> Cu>Co>Cd. The coefficient of variation of Cr and Mn indicated the high degree of anthropogenic activities, and the remaining heavy metals implied that they were relatively stable. The single factor pollution index and Nemerow’s pollution index consistently showed that only sampling site R06 was slightly polluted, and the remaining 13 sampling points were free-pollution. The average annual health risk value of chemical carcinogens in the human body is much higher than that of chemical non-carcinogens, and children are more likely to be threatened by heavy metals than adults. Under the route of drinking water and skin contact, the maximum annual health risk caused by Cr exceeds the maximum acceptable risk level 1x10 -4 issued by USEPA. The correlation analysis suggested that the correlation coefficients between Mn-Co, Co-Ni, As-Cd, and Cr-Ni revealed a significant positive correlation. When combined with the principal component analysis, the three principal components may be related to the discharge of domestic wastewater, automobile exhaust emissions, and pesticides and fertilizers, respectively.
{"title":"Pollution Appraisal, Health Risk Assessment\u0000and Source Apportionment of Reservoirs’\u0000Heavy Metals in an Agricultural Base,\u0000Northern Anhui Province, China","authors":"Xuanrong Li, Jie Ma, Song Chen, Xiaoke Shen, Jie Meng, Jiasheng Geng, Yang Yang, Zhibin Yang, Jun Zhang, Haitao Zhang, Shisheng Li","doi":"10.15244/pjoes/178195","DOIUrl":"https://doi.org/10.15244/pjoes/178195","url":null,"abstract":"The related issues with the heavy metals in the different water bodies have been widespread, causing concern around the world. In this study, the single-factor pollution index, Nemerow composite pollution index, health risk assessment (AHP model), multivariate statistical analysis, including correlation analysis, and principal component analysis were conducted to depict the pollution appraisal, the health risk assessment, and the source apportionment of the reservoirs in Northern Anhui Province, China. The results showed that the mean concentration order was as follows: Mn>Zn>As>Ni>Cr> Cu>Co>Cd. The coefficient of variation of Cr and Mn indicated the high degree of anthropogenic activities, and the remaining heavy metals implied that they were relatively stable. The single factor pollution index and Nemerow’s pollution index consistently showed that only sampling site R06 was slightly polluted, and the remaining 13 sampling points were free-pollution. The average annual health risk value of chemical carcinogens in the human body is much higher than that of chemical non-carcinogens, and children are more likely to be threatened by heavy metals than adults. Under the route of drinking water and skin contact, the maximum annual health risk caused by Cr exceeds the maximum acceptable risk level 1x10 -4 issued by USEPA. The correlation analysis suggested that the correlation coefficients between Mn-Co, Co-Ni, As-Cd, and Cr-Ni revealed a significant positive correlation. When combined with the principal component analysis, the three principal components may be related to the discharge of domestic wastewater, automobile exhaust emissions, and pesticides and fertilizers, respectively.","PeriodicalId":510399,"journal":{"name":"Polish Journal of Environmental Studies","volume":"12 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140702286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Characteristics of Key Biological Assemblage\u0000Dynamics and Biotic Integrity Assessment in the\u0000Upper Yellow River, China","authors":"Yuqian Liu, Zijun Zhou, Lei Ge, Siyang Wang","doi":"10.15244/pjoes/183154","DOIUrl":"https://doi.org/10.15244/pjoes/183154","url":null,"abstract":"","PeriodicalId":510399,"journal":{"name":"Polish Journal of Environmental Studies","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140700533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Barloková, Ján Ilavský, Alena Matis, O. Kapusta
WTP Rozgrund, which was used to treat to the water from Rozgrund reservoir, must have been set out of operation due to the deteriorated quality of the water and its smell. The aAim of this work was to perform the pilot-plant tests, with the goal ofaiming to treating water from the reservoir to achieveand get the compliantying water quality of the water. Conventional water treatment concerning coagulation, flocculation, and filtration with two different filtration fillings – Filtralite Mono-MultiFine and filter sand with black-coal material Carboziar – was compared with conventional treatments with filter sand and Carboziar complemented with filtration through granulated active coal (Norit 830), the ultrafilration using fully automated equipment with membrane module UA-640 (Microdyn-Nadir), and ultrafiltration combined with active granulated carbon. Monitored wereas the pH, turbidity, color, alkalinity, COD Mn , TOC, aluminum, number and size of particles, and hydrobiology in the samples of raw and treated water. Obtained results provided that the two most suitable treatment technologies were the filtration with double layer filling consisting of sand and antracite combined with filtration via GAU (removal efficiency of COD Mn and turbidity was 90.5% and 85%, respectively) and the ultrafiltration combined with GAU (82.6% for COD Mn and 89% for turbidity removal). Biological activation after the treatment was not found.
{"title":"Comparison of Conventional Water Treatment\u0000and Ultrafiltration Pilot Tests\u0000in the Rozgrund Water Treatment Plant","authors":"D. Barloková, Ján Ilavský, Alena Matis, O. Kapusta","doi":"10.15244/pjoes/177621","DOIUrl":"https://doi.org/10.15244/pjoes/177621","url":null,"abstract":"WTP Rozgrund, which was used to treat to the water from Rozgrund reservoir, must have been set out of operation due to the deteriorated quality of the water and its smell. The aAim of this work was to perform the pilot-plant tests, with the goal ofaiming to treating water from the reservoir to achieveand get the compliantying water quality of the water. Conventional water treatment concerning coagulation, flocculation, and filtration with two different filtration fillings – Filtralite Mono-MultiFine and filter sand with black-coal material Carboziar – was compared with conventional treatments with filter sand and Carboziar complemented with filtration through granulated active coal (Norit 830), the ultrafilration using fully automated equipment with membrane module UA-640 (Microdyn-Nadir), and ultrafiltration combined with active granulated carbon. Monitored wereas the pH, turbidity, color, alkalinity, COD Mn , TOC, aluminum, number and size of particles, and hydrobiology in the samples of raw and treated water. Obtained results provided that the two most suitable treatment technologies were the filtration with double layer filling consisting of sand and antracite combined with filtration via GAU (removal efficiency of COD Mn and turbidity was 90.5% and 85%, respectively) and the ultrafiltration combined with GAU (82.6% for COD Mn and 89% for turbidity removal). Biological activation after the treatment was not found.","PeriodicalId":510399,"journal":{"name":"Polish Journal of Environmental Studies","volume":"69 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140699858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ni Zhang, Tianyi Pu, Xiaolan Liu, Zhengwen Yu, Yuehua Song
C. tetracocca are local characteristic plants with significant medicinal and economic values. However, little is known about the relationship of soil nutrient contents and the accumulation of primary and secondary metabolites from C. tetracocca . The metabolic accumulation of C. tetracocca grown in karst areas and non karst areas have not been compared. In this study, we sampled soil and leaves of C. tetracocca in karst areas and non karst areas to compare the relationship between soil nutrients (soil organic carbon, total nitrogen, total phosphorus, total potassium, calcium, magnesium) and organic components (organic carbon, total nitrogen, total phosphorus, total potassium, calcium, magnesium), free amino acids, functional components (catechin (C), caffeine (CAFF), gallic acid (GA), epicatechin (EC), (-)-epicatechin gallate (ECG), (-)-epigallocatechin (EGC), and epigallocatechin gallate (EGCG)) of C. tetracocca . The results showed that there was a significant positive correlation between K and EC in soil and plants and a significant negative correlation between P and EC. There was a negative correlation
C. tetracocca 是当地的特色植物，具有重要的药用和经济价值。然而，人们对土壤养分含量与四叶草初级和次级代谢产物积累的关系知之甚少。在岩溶地区和非岩溶地区生长的 C. tetracocca 的代谢积累还没有进行过比较。在这项研究中，我们对岩溶地区生长的四裂叶蝉的土壤和叶片进行了取样。土壤养分（土壤有机碳、全氮、全磷、全钾、钙、镁）和有机成分（有机碳、全氮、全磷、全钾、钙、镁）之间的关系、游离氨基酸、儿茶素（C）、咖啡因（CAFF）、没食子酸（GA）、表儿茶素（EC）、(-)-表没食子儿茶素没食子酸酯（ECG）、(-)-表没食子儿茶素（EGC）和表没食子儿茶素没食子酸酯（EGCG））之间的关系。结果表明结果表明，土壤和植物中的钾与导电率呈显著正相关，而磷与导电率呈显著负相关。负相关
{"title":"Correlation between Soil Physicochemical\u0000Factors and the Accumulation of Functional\u0000Components of Camellia Tetracocca\u0000in Karst Areas and Non Karst Areas","authors":"Ni Zhang, Tianyi Pu, Xiaolan Liu, Zhengwen Yu, Yuehua Song","doi":"10.15244/pjoes/176064","DOIUrl":"https://doi.org/10.15244/pjoes/176064","url":null,"abstract":"C. tetracocca are local characteristic plants with significant medicinal and economic values. However, little is known about the relationship of soil nutrient contents and the accumulation of primary and secondary metabolites from C. tetracocca . The metabolic accumulation of C. tetracocca grown in karst areas and non karst areas have not been compared. In this study, we sampled soil and leaves of C. tetracocca in karst areas and non karst areas to compare the relationship between soil nutrients (soil organic carbon, total nitrogen, total phosphorus, total potassium, calcium, magnesium) and organic components (organic carbon, total nitrogen, total phosphorus, total potassium, calcium, magnesium), free amino acids, functional components (catechin (C), caffeine (CAFF), gallic acid (GA), epicatechin (EC), (-)-epicatechin gallate (ECG), (-)-epigallocatechin (EGC), and epigallocatechin gallate (EGCG)) of C. tetracocca . The results showed that there was a significant positive correlation between K and EC in soil and plants and a significant negative correlation between P and EC. There was a negative correlation","PeriodicalId":510399,"journal":{"name":"Polish Journal of Environmental Studies","volume":"18 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140700180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Waste management services in the Demak Regency only reached 35% in 2021, resulting in those without waste management services using outdated waste disposal methods such as littering, river dumping, hoarding, and open waste burning. Open waste burning activities are dangerous to the environment because they produce greenhouse gas (GHG) emissions, namely carbon dioxide (CO 2 ), methane (CH 4 ), and nitrous oxide (N 2 O), causing extreme climate change that affects land productivity. This study aims to develop a waste management plan to reduce emissions from open waste burning in the Demak Regency. A transect walk survey determined the waste burning point and the burned waste composition. IPCC 2006 is the basis for calculating emissions and determining emission-reduction strategies using the analytical hierarchy process (AHP). As a result, the projection of open burning of waste in the Demak Regency increases the amount of waste in open burning every year. In 2022, the projected emissions from open burning activities amounted to 48.69 Gg/year, and in 2031 to 55.08 Gg/year. After waste management, the emission rate due to open burning activities in 2022 will be 27.87 Gg/year, and in 2031 will be 31.53 Gg/year. There is a considerable decrease of 42.76%. Therefore, there is excellent potential for emissions reduction through improved waste management
{"title":"Waste Management Strategy as an Effort\u0000to Reduce Emissions Due to Open Waste\u0000Burning: Demak Regency Case Study","authors":"Badrus Zaman, Ika Bagus Priyambada, Mochamad Arief Budiharjo, Bimastyaji Surya Ramadan, Annisa Sila Puspita, Ayu Putri Cahyati","doi":"10.15244/pjoes/176058","DOIUrl":"https://doi.org/10.15244/pjoes/176058","url":null,"abstract":"Waste management services in the Demak Regency only reached 35% in 2021, resulting in those without waste management services using outdated waste disposal methods such as littering, river dumping, hoarding, and open waste burning. Open waste burning activities are dangerous to the environment because they produce greenhouse gas (GHG) emissions, namely carbon dioxide (CO 2 ), methane (CH 4 ), and nitrous oxide (N 2 O), causing extreme climate change that affects land productivity. This study aims to develop a waste management plan to reduce emissions from open waste burning in the Demak Regency. A transect walk survey determined the waste burning point and the burned waste composition. IPCC 2006 is the basis for calculating emissions and determining emission-reduction strategies using the analytical hierarchy process (AHP). As a result, the projection of open burning of waste in the Demak Regency increases the amount of waste in open burning every year. In 2022, the projected emissions from open burning activities amounted to 48.69 Gg/year, and in 2031 to 55.08 Gg/year. After waste management, the emission rate due to open burning activities in 2022 will be 27.87 Gg/year, and in 2031 will be 31.53 Gg/year. There is a considerable decrease of 42.76%. Therefore, there is excellent potential for emissions reduction through improved waste management","PeriodicalId":510399,"journal":{"name":"Polish Journal of Environmental Studies","volume":"57 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140700329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xin Nan Wang wang, Ya Nan Li, Yue Ying Li, Lian Ju Ma, Lanling Wang, Xue Mei Li
Rice ( Oryza sativa L.) is one of the most important food crops in China, and saline-alkali stress significantly affects the growth and development of rice. In this study, growth parameters were measured, and a metabolomics analysis technique was used to analyze differentially expressed metabolites in rice seedlings in response to saline-alkali stress. The results showed that growth, relative growth rate, and biomass of rice seedlings significantly decreased under saline-alkali stress. A total of 41 metabolites (16 up-regulated and 25 down-regulated) were significantly changed in leaves of rice seedlings under saline-alkali stress. There were 36 metabolic pathways associated with saline-alkali stress, of which starch and sucrose metabolism, glyoxylate and dicarboxylic metabolism, tricarboxylic acid cycle (TCA cycle), alanine, aspartate and glutamate metabolism, and pentose phosphate pathway were the most highly correlated. This study found that saline-alkali stress significantly reduced carbohydrate metabolism, respiratory metabolism, amino acid metabolism, and organic acid synthesis, while the increased amino acids may be the key metabolites for rice seedlings to adapt to saline-alkali stress. Our results provide new ideas for studying the metabolic mechanism of saline-alkali tolerance of rice seedlings.
{"title":"Metabolomic Analysis of Rice (Oryza sativa L.)\u0000Seedlings under Saline-Alkali Stress","authors":"Xin Nan Wang wang, Ya Nan Li, Yue Ying Li, Lian Ju Ma, Lanling Wang, Xue Mei Li","doi":"10.15244/pjoes/177440","DOIUrl":"https://doi.org/10.15244/pjoes/177440","url":null,"abstract":"Rice ( Oryza sativa L.) is one of the most important food crops in China, and saline-alkali stress significantly affects the growth and development of rice. In this study, growth parameters were measured, and a metabolomics analysis technique was used to analyze differentially expressed metabolites in rice seedlings in response to saline-alkali stress. The results showed that growth, relative growth rate, and biomass of rice seedlings significantly decreased under saline-alkali stress. A total of 41 metabolites (16 up-regulated and 25 down-regulated) were significantly changed in leaves of rice seedlings under saline-alkali stress. There were 36 metabolic pathways associated with saline-alkali stress, of which starch and sucrose metabolism, glyoxylate and dicarboxylic metabolism, tricarboxylic acid cycle (TCA cycle), alanine, aspartate and glutamate metabolism, and pentose phosphate pathway were the most highly correlated. This study found that saline-alkali stress significantly reduced carbohydrate metabolism, respiratory metabolism, amino acid metabolism, and organic acid synthesis, while the increased amino acids may be the key metabolites for rice seedlings to adapt to saline-alkali stress. Our results provide new ideas for studying the metabolic mechanism of saline-alkali tolerance of rice seedlings.","PeriodicalId":510399,"journal":{"name":"Polish Journal of Environmental Studies","volume":"58 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140700320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Freshwater ecosystems are being polluted in many ways with heavy metal (loid)s, mostly due to human activities that affect aquatic biota and threaten human health. Water and surface sediment samples were collected from different sites of the Mohlapitsi River, South Africa, during the high flow and low flow seasons. The samples were analyzed for As, Cr, Cu, Fe, Mn, Ni, Pb, and Zn levels using inductively coupled plasma optical emission spectrometry (ICP-OES). In the water, only Fe, Mn, and Zn were detected, but the concentrations were below the standard guideline values except for Mn. However, in the sediment, all the metal (loid)s were detected in considerable concentrations. The mean concentrations of the metal (loid)s were higher during high flow than low flow, except for Fe. The enrichment factor (EF) of the heavy metal (loid)s ranged from low enrichment to moderate enrichment. Geo-accumulation index (I geo ) Shows moderate contamination levels with Cr and Mn. The main sources of contamination are attributed to discharges from agricultural fields and grazing areas in the catchment. The results provide baseline information on metal (loid) contamination in the Mohlapitsi River for management purposes.
{"title":"Spatiotemporal Assessment of Heavy Metal\u0000(Loid) Pollution in Water and Surface Sediment\u0000of the Mohlapitsi River, South Africa","authors":"A. Addo-Bediako","doi":"10.15244/pjoes/169451","DOIUrl":"https://doi.org/10.15244/pjoes/169451","url":null,"abstract":"Freshwater ecosystems are being polluted in many ways with heavy metal (loid)s, mostly due to human activities that affect aquatic biota and threaten human health. Water and surface sediment samples were collected from different sites of the Mohlapitsi River, South Africa, during the high flow and low flow seasons. The samples were analyzed for As, Cr, Cu, Fe, Mn, Ni, Pb, and Zn levels using inductively coupled plasma optical emission spectrometry (ICP-OES). In the water, only Fe, Mn, and Zn were detected, but the concentrations were below the standard guideline values except for Mn. However, in the sediment, all the metal (loid)s were detected in considerable concentrations. The mean concentrations of the metal (loid)s were higher during high flow than low flow, except for Fe. The enrichment factor (EF) of the heavy metal (loid)s ranged from low enrichment to moderate enrichment. Geo-accumulation index (I geo ) Shows moderate contamination levels with Cr and Mn. The main sources of contamination are attributed to discharges from agricultural fields and grazing areas in the catchment. The results provide baseline information on metal (loid) contamination in the Mohlapitsi River for management purposes.","PeriodicalId":510399,"journal":{"name":"Polish Journal of Environmental Studies","volume":"67 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140702635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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